Introduction The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer- ence to the timing of operation. In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal.

Chapter 1 1.3 Using the Machine 1.3.1 Original Placement Indicator 0002-7214 The original placement indicator goes on when an original is placed in the original tray, and it flashes to indicate the presence of a jam. Original placement indication F-1-3 1.3.2 Warning and Action to Take 0002-7215 If the original placement indicator starts to flash while an original is being moved, suspect a jam, and go through the following:...

Chapter 2 2.1 Basic Construction 2.1.1 Overview of the Electrical Circuitry 0002-7181 The machine is not equipped with a controller PCB, and its electrical mechanisms are controlled by the reader controller PCB, which serves as a CPU (IC1). The CPU interprets signals from sensors and the host machine to generate signals used to drive DC loads (e.g., motor, solenoid) with the help of the CPU (IC9) of the ADF driver PCB.

Chapter 2 1. Normal rotation picks up an original, and delivers it after it has single-sided original -> single-sided pickup/delivery been read. print single-sided original -> double-sided print extra-length original>single-sided print 2. Normal picks up an original, and reverses and double-sided original ->...

Chapter 2 Idly moving the 1st sheet. Reading the back of the Moving the 2nd sheet. 1st sheet. Picking up the 2nd sheet. Delivering the 1st sheet. Moving the 1st sheet. Reading the face of the 2nd sheet. Arching the 2nd sheet. Turning over the 1st sheet.

Chapter 2 b. Large size Original Picking up the 1st sheet. Moving the 1st sheet. Turning over the 1st sheet. Arching the 1st sheet. Standing by for reading Arching the 1st sheet. the 1st sheet. Reading the 1st sheet. Reading the face of the 1st sheet.

Chapter 2 Original Picking up the 1st sheet. Moving the 1st sheet. Arching the 2nd sheet. Arching the 1st sheet. Turning over the 1st sheet. Arching the 1st sheet. Standing by for reading the 1st sheet. Reading the face of the 1st sheet. Picking up the 2nd sheet.

Chapter 2 2.2.6 Idle Feed/Reversal Pickup/Delivery (single-sided original of mixed configurations -> single-sided print) 0002-7299 The following show the flow of originals: Original Picking up the 1st sheet. Turning over the 1st sheet. Arching the 1st sheet. Arching the 1st sheet. Idly moving the 1st sheet.

Chapter 2 Picking up the 1st sheet. Turning over the 1st sheet. Standing by for reading Arching the 1st sheet. the 1st sheet. Reading the face of the Reading the 1st sheet. 1st sheet. Reading the 1st sheet. Moving the 1st sheet. Separating the 2nd sheet.

Chapter 2 Item Description Sensor used (notation) Cross-feed checks the width of the original placed in the original pickup tray. original width volume direction (VR1) identification between A4R/A5R and LTRR/STMTR AB/inch sensor b. Mix of Different Configurations/Extra-Length If the originals are of different configurations or are of extra length, the following 3 detection mechanisms are used: T-2-4 Item Description...

Chapter 2 ADF driver PCB Trailing edge of the original (small size) Trailing edge of the original Read standing by position (large size) F-2-18 When an original is placed on the original tray, the light-blocking plate operates in keeping with the detecting lever of the LGL sensor to block the light of the photo interrupter.

Chapter 2 ADF controller PCB Slide guide (rear) Gear Slide guide (front) F-2-20 The track of the slide guide is given a groove so that the slide may stop at specific default sizes. Some sizes, however, are extremely close to each other, possibly causing the slide to stop at the wrong point.

Chapter 2 F-2-21 B. Mix of Different Configurations, Extra-Length The machine measures the length of time (distance) from when the read sensor goes on to when it goes off; it then uses the result of the detection (length) and the result of detection made on the original tray to identify the size of the original.

Chapter 2 2.4 Document Pickup/Separation 2.4.1 Basic Sequence of Operation 0002-9454 When the Start key is pressed with an original on the original tray, the machine executes the following sequence of operation to pickup up the original: a. Picking Up the Original When the pickup motor (M1) rotates in reverse and the pickup clutch (CL1) goes on, the pickup roller unit moves down to start pickup operation.

Chapter 2 registration roller No2 registration lower roller Reaing Read roller 1 Pressure roller by position Read standing by position F-2-25 e. Stream Reading The machine identifies the point of reading with reference to the pulses generated by the read motor after the read sensor goes on. When the leading edge of the original reaches the point of reading, the machine sends the image leading signal to the host machine so that the latte can start reading operation.

Chapter 2 2.5 Document Reversing 2.5.1 Basic Sequence of Operation 0002-9742 a. Picking Up the Original for Reading the 1st Side The platen roller rotates using the drive from the feed motor (M2) for reading the 1st side of the original. The machine keeps count of pulses from the feed motor to monitor the movement of the original;...

Chapter 2 c. Reversing/Moving the Original 2 The machine rotates the feed motor in normal direction and the delivery reversal motor in reverse to move sheets at the same time. The machine stops the delivery reversal motor when the originals have moved a specific distance. The machine then drives the lock motor for a specific number of pulses to lock the platen upstream roller in place.

Chapter 2 It then accelerates the delivery reversal motor when the trailing edge of the original leaves the platen downstream roller for delivery. The machine uses the following sequence of operation to deliver the original when the host machine finishes reading it: Delivery reversal Upper roller Read roller 2...

Chapter 2 The machine is supplied with 2 types of power by the host machine 24 V and 13 V. The 24-V power is mainly used to drive loads (motor, clutch, solenoid), while the 13-V power is converted into 5 V by IC10 (DC-DC converter) for use by sensors and the ADF controller PCB. Unlike other models, the machine will remain supplied with power even when its feeder cover is opened.

Chapter 3 3.1 Removing from the Host Machine 3.1.1 Feeder 3.1.1.1 DADF-M1 0017-6398 1) Turn off the control panel power switch [1]. 2) Turn off the main power switch [2]. 3) Disconnect the power cable (for the wall outlet) [3].

Chapter 3 Moreover, be sure that the separation front guide [7] is mounted so that the spring [1] with a bend being upstream in relation to feed direction. wider side of the sheet [8] is toward the pickup roller side. 3.4.3 Separation Plate/Separation Pad 3.4.3.1 Before Removing the Separation Plate/Separation 0017-6419...

Chapter 3 10mm 10mm Right angle F-3-104 2) Set the test chart on the original pickup tray, and execute a 100% magni- fication copy. 3) Lay the test chart on top of the image outputted in step 2) to confirm the image is within the following standard value.

Chapter 4 F-4-2 Be sure to push in the stamp until a click is felt. A gap can cause paper jams. 4.2 Maintenance and Inspection 4.2.1 Periodically Replaced Parts 4.2.1.1 Periodically Replaced Parts 0003-1674 The machine does not have parts that must be replaced on a periodical basis. 4.2.2 Durables 4.2.2.1 Durables 0003-1675...

Chapter 4 Take care so that the lint-free paper will not touch the tip of the static eliminator. F-4-15 3) When done, mount back the inside cover. 6. Read Roll and Roll Scraper 1) Remove the lower left cover. F-4-16 2) Clean the read roll [1] and the roll scraper [2] with lint-free paper moistened with alcohol.

Chapter 4 F-4-22 F-4-23 4) Clean the top face (plastic film) [1] of the prism. F-4-24 The surface of the prism coming in contact with paper is covered with plastic film. Be sure to clean the film. 3. Post-Separation Sensor, Prism 1) Remove the inside cover.

Chapter 4 justments. 4.3 Adjustment 2) Make the following selections to highlight [SENS-IN]; FEEDER>FUNC- TION>SENS-IN. 3) Press the OK key. 4.3.1 Basic Adjustment In response, the machine will run an automatic adjustment session, and will indicate 'OK!' if it ends normally. 4.3.1.1 Overview 4) When done, end service mode.

Chapter 4 feed direction and the host machine's scanner system: 1) Place the Test Chart in the machine, and make a copy. 2) Check the right angle of the image in relation to the leading edge of the output (i.e., angle A). F-4-33 F-4-36 4.3.1.6 Height...

Chapter 4 Memo: To adjust the magnification, compare an image made in stream reading mode and an image made in copyboard mode. Unlike other ADFs, you will not be comparing a copy image and its original. 1) Using A4 or LTR paper, prepare a test chart as follows: 10mm 10mm Right angle...

Chapter 4 - if A > 1 mm, move the volume unit [6] to the front. - if B > 1 mm, move the volume unit [6] to the rear. 10mm 10mm Right angle F-4-43 2) Place the Test Chart in the original pickup tray, and make a copy at a 100% reproduction ratio.

Chapter 4 (unit: 0.5 mm) (range: -30- to 10; -5 to +5 mm) 6) Make a copy of the Test Chart once again, and see the image is as indicat- 4.3.1.12 White Level 0003-2377 1) Place A4 or LTRR paper on the copyboard glass, and close the machine. Make sure that the paper is not too small.

Chapter 4 PCB1 F-4-51 4.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB 4.5.1 Overview 0003-5520 Of the LEDs and check pins used in the machine, those needed for servicing the machine in the field are discussed. Do not touch the check pins not indicated in the list.

Chapter 5 5.1 Overview 5.1.1 Overview 0004-5175 The CPU of the machine's ADF controller PCB is equipped with a function to monitor the state of the machine, flashing the Original Placement indicator when it finds a fault in the course of a check it runs as programmed. The machine communicates the presence of a fault to its host machine in the form of a code, which is any of the following 3 types;...

Chapter 5 Code Detail code Item Description E413 The level of the locking HP sensor does not change within a specific period of time. Cause: there is a fault in the locking motor or the driver PCB; there is a fault in the locking HP sensor; there has been an increase in the load of the locking cam.